| Early Ordovician Sea Level Changes in South China and Their Worldwide Correlation |
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| 作者姓名： | Wang Xiaofeng |
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| 作者单位： | Wang Xiaofeng (Yichang Institute of Geology and Mineral Resources，CAGS，Yichang 443003) Li Zhiming Chen Jianqiang (Department of Geology and Mineral Resources，China University of Geosciences，Beijing 100083) Chen Xiaohong (Yichang Institute of Geology a |
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| 摘 要： | INTRODUCTIONTheoaf~ansed~arewidelydistributedinSouthetna,fromtheYanalCratondPborminnorthtocontinentalmarginofsoutheastern~insouth.ThePreSentpaperdiscussesmainlytheEarlyOrdovidan(thehoeofHirmtodontussimplex~tothebaseofNemopagngraciliszone,Wangatal.,1992)sealeVelchangeSandtheirworldwidecorrelationbasedonasyntheticalstudyofseqUenCe,bioshatiglaphyandaretratigl'aphy.Thisapproachwillfillinthe~instudyoftheOrdovidanofChina,andimprovethesu~ionandCO~ionofbio--,litho--andcbronostheigraphy.Mea…
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Early Ordovician Sea Level Changes in South China and Their Worldwide Correlation |
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| Wang Xiaofeng.Early Ordovician Sea Level Changes in South China and Their Worldwide Correlation[J].Journal of China University of Geosciences,1996(1). |
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| Authors: | Wang Xiaofeng |
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| Abstract: | The sea level changes and their correlation from the latest Cambrian C. proavus zone to the Ordovician N. gracilis zone in South China are discussed on the basis of the Ordovician paleogeographic reconstruction in China. The study of sequence, biostratigraphy and ecostratigraphy suggests that at least 8 major regressive events, occurring in the following levels: basal H. simplex zone (RE1), near the base of C. intermedius zone (RE2), basal C. angulatus zone (RE3), near Mid/Upper G. quadriplicatus zone (RE4) and succeeding the first phase (RE4a) of RE4 at basal P. deltifer zone, Kiaerograptus/Brygograptus zonal boundary (RE5), end S.diversus-P.proteus A. Z.(RE6), end P. originalis zone (RE7) and Early H. teretiusculus or end P. serra zone (RE8), can be recognized in the cratonic plat- form and its shelf-slope tracts of the South China plate based on sequence change or disconformity and associated breaks in biological succession. Most of them can be traced in the other plates or continents. |
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| Keywords: | Ordovician sea level change sequence |
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